Difference between these two ASUS monitors?

[up868390]

https://www.asus.com/uk/Monitors/ROG-SWIFT-PG279Q/
VS
https://www.asus.com/uk/Monitors/ROG-SWIFT-PG278QR/

One has an R on the end other then that I can’t see a difference?

Thanks!

 

[k1114]

There's the 278Q and 278QR. There's also the 279Q and 279QR. The 279 are ips, the 278 are tn. The ones with R are the updated versions.